just a thought, but do you move the scale around on the floor to check for changes depending on where the scale is placed? My floor is uneven in a lot of spots and if I don't find that one perfect spot where all of the 'feet' of the scale have perfect contact with the floor, the readings will be vastly off.

Another thought - is the scale on a carpeted surface, or is it a hard flat surface (tile, hardwood, poly flooring)? I've always had issues using a scale on carpet, weight doesn't seem to be distributed evenly so would cause huge swings in readings, even within a few minutes. If you're not already doing so weigh on an even, flat, hard surface.

A 9 pound change in weight in a 24 hour period is awfully high for someone your size. If you were morbidly obese, that might not be out of the realm of possibility. However, because you're not morbidly obese, we need to look at other possible causes.

My weight can shift 3-4 pounds in a day because of water retention as well as the physical weight of the food I eat. If I were to drink a 2 liter bottle of water and not go pee, that would show up as at least 6+ pounds. Then there is the physical weight of the food.

Do you weight yourself after a bowel movement ? Not to get TMI, but your waste products also have weight. So, if you don't do a poop in the morning, the physical weight of all the food you ate the day before is still in your intestines. Food has weight. Water has weight. Your body's waste products have weight and all of these can cause the scale to go up.

If you're having normal bowel movements, then it's doubtful that's what's causing the gain. You mentioned that you bought a brand new scale. That should be an accurate measure of your weight. Although, personally, I would take the fat % readings with a gain of salt. Body fat scales are notoriously inaccrate when it comes to measuring body fat.

So, you're saying with your new scale, you still have a 9 pound difference in a 24 hour period ? that is unusual.

Well I always weigh in first thing in the morning, completely stripped. I always do it before I drink anything. So the factors are all the same. I eat a lot of salt. I crave it. And I do eat processed food. So Maybe the salt is the difference but it still seems like a lot. I could understand maybe 5 pounds but 9 is a lot. Just looking for suggestions. I know I'm not pregnant also.

Are you weighing at the same time, under the same circumstances every day? I agree with the previous poster that fluctuations are normal, but 9 pounds seems high. Though I would expect a big gain if I were wearing more clothes, hadn't used the bathroom, just ate a full dinner, etc. "Certain foods" won't add 9 pounds!

I know that a lot of sodum in your diet causes water retention, but I wouldn't think it would be 9 pounds worth. Maybe google it and see what you find? Have you been eating a lot of processed foods? Soups?

Well I had a 15 year old scale and I thought it must be broken. I would step on it one day and it would be 9 pounds up and then later it would go back down the next day. And also this would ne no where near the time of my period. So I thought the scale was broken. I purchased a brand new scale for about $70. I made a point to get the best. It measures weight, body fat percentage and water weight. This scale will also go up and down by 9 pounds day by day. I don't understand. 9 pounds seems like a lot. I am 32 years old. Also on this new scale it will show that my fat % is up as well. So does any one have any suggestions about why my weight goes up and down so drastically on a day by day basis. Do certain foods play a role in this?

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